Improvement in envelopes and letter-sheets combined



C. SCHWEIZER.

Envelope and LetterSheet Combined.-

No. 131,184'. Patented Sep.10,1872.

UNITED STATES PATENT OFFICE.

IMPROVEMENT IN ENVELQPES AND LETTER-SHEETS COMBINED.

Specication forming part of Letters Patent No. 131,184, dated September 10, 187,2.

Specification describing certain Improve= ments in Combined Letter-Sheets and Envelopes, invented by CEARLEs SCHWEIZER, of Boston, in the county of Suolk and State of Massachusetts. The drawing accompanying this specification represents, in*- Figure l, a diagram of my combined lettersheet and envelope as developed upon a plane surface for writing 5 and in Figs. 2 and 3, opposite side views of the same as folded and sealed for the post.

My improved combination letter-sheet and envelope is formed from one piece of paper, and consists, first, of a rectangular portion, A, upon which writing is to be transcribed, and a second portion, B, consisting of two end iiaps, aa, and aside flap, b, these flaps being so disposed as, when the sheet A is folded into the intended compass, they shall partially overlap one side thereof and one another, as shown in Fig. 2 of the drawing. The end flaps or Wings a a are of sufficient width to partially overlap the front or address side of the folded sheet, as shown in Fig. 3 of the drawing.

The result of this arrangement is that the end ilaps can be sealed and secured at the bottom to the envelope, and thus greater security is obtained without fastening the bot tom edges of the flaps to the letter, which it would be necessary to do were not the iaps of such length as to permit of their being folded over upon the address side ofthe envelope.

By means of a combined letter-sheet and envelope, as before explained, an envelope is always at hand, as the two are inseparable, and for travelers especially the invention will be found valuable. V

By my method a perfect envelopeindependent of the letter-sheet may be obtained, if desired, by removing the envelope portion B of the papers and cementing its edges.

Olaz'm.

I claim as my invention- The herein-described combined letter sheet and envelope, provided with iiaps a arranged Witnesses W. GEO. ALDEN, W. E. BOARDMAN. 

